Combined grinder and gummer machine



G. P. NABORS. COMBINED GRINDER AND GUMMER MACHINE.

APPLICATION FILED JUNE 8, l9l8. 1,347,965, Patented July 27, 1920.

G. P. NABORS. V

COMBINED GRINDER AND GUMMER MACHINE.

APPLICATION FILED JUNE 8.1918- 1 ,347,965. Patented July 27, 1920.

4 SHEETS-SHEET 2. Q

$ M vwe wto z (1mm e4 G. P. NABORS. COMBINED GRINDER AND GUMMER MACHINE.-

APPLICATION FILED JUNE 8.1918.

1 47,965, Patented July 27, 1920.

4 SHEETS-SHEET 3.

Q/G a A 51mm mtoz GJEIVa Zara.

G. P. NABORS. COMBINED GRINDER AND G UMME R MACHINE. APPLICATION FILED JUNE 8, 191g.

Patented July 27, 1920.

4 SHEETS-SHEET 4.

UNIT ED. AET-ESQPATENT .oer cfi.

GEORGE PIERCE e sons, 0F AnG rA, ARKANSAS,

COMBINED GRINDER'AND GUMMER MACHINE.

NAnons,a citizen ofthe United States, residing at Argenta, in the county of Pulask and State ofArkansas, have invented certain 7 new and usefullmprovements in Combined Grindercand Glimmer Machines; andI do hereby declare the following to be a full,

clear, and exact description of the invention,-

such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to machines for grinding and gumming saws of V gins'or linters and the primary ob ect,of.the 1nven-,'

tionis to provide a machine, which will accommodate a pluralltyof saws, whereby the samecan be simultaneously ground and gumrnefd.

Another object of the invention is to pro vide a grinder and'gummer machine having improved means for operating the sawsand gumrner frame, so that the gummers will. be brought into and out of contact witheach saw tooth of the saws.

A further object of the invention is to provide a grinding and gummer machine having an improved means for adjusting the spindle carrying the saws, whereby the saws can be brought into and out of operative position in relation to the grinders and gummers. Y

A still further object of the invention is to provide an improved gummer and grinder.

having automatic means for stopping the grinder and gummers after the saws have been treated.

' A, still further object of the invention is to provide an improved grinding and gum mer machine ofthe above character, which is efficient and durable in construction, one' that is simple and easy to manufacture, and

one that can be placed upon the market at a reasonable cost. I

\Vith these and other objects in view the claimed and illustrated in the accompanying drawings, forming part thereof in I which Figure 1 is a front elevation of the improved maclnne, .7

Fig. 2 is a horizontal longitudinal section nected with the opposite beamv 15 by rela- Specification of Letters Patent. Patented J llly 2 7, 1920.

191;. Serial No. 239,070.v i

taken through the improved machine directly above thegrinders,

Fig. 3 is a transverse section taken on the, j line 3-3 of Fig.1, i

F ig. 4 is a transverse line4, of Fig. 2, I V 1 Fig. 5 is a detail transverse section taken on the line 5.5 of Fig. 1,

Fig. 6 is a fragmentarydetail horizontal section taken on the line,66 of Fig, 5,

Fig; 7 is a detail view of the InQdified form of grinding cylinder.

Referring to the drawings, in detail, wherein similar reference characters desi'g-M natewcorresponding parts throughout the. several views,1thenumeral 1 generallyindicates' the improved machine, which includes the frame 2 'inwhich is supported the grind- 3 and the gummer meeha-,

section taken on the. V

ards 5, 6, 7, 8, 9 audio, which are arranged in pairs and connected at their, lower. ends by transverse beams 11, which form support; ing feet forthe frame. The upper ends of the standards 5, 6, 7, and 8 are connected by 30 transverse beams 12 and all of the beams are a connected by longitudinally extending strips or braces 13.1'Thestandard :9 ends shortof the other beams and is connected'to the opposite beam 10 by a transverse beani14; which is in alinementwithtransve-r'se beams 15 which extend across the frame anda're' connected to the standards "5,6, 7 and .8 and these beams are arranged intermediate the beams '11 and 12. The beam 14 is.con-

tively short braces 16, which form a rigid connection between the same. A relatively l short upright 17 is"secured to the beam '14 and is connected at its upper end to the beam 8 by a beam 18. The uprights 5 and 'Z are connected intermediate their ends by longitudinally extending beams 19; i 3

The saw grinding mechanism 3 includes a shaft 20, which is jo'u'rnaled in'a pair-bf bearings 21 secured tothetransverse beams 15." Keyed to the shaft 20are' a plur'ality of pairs of spaced grinding wheels 22, which maybe formed of'any suitable abrasive material. The grinding wheels122 are spaced 105 so as to accommodatethe width of a saw, so that both sides of the saw will be ground; It is to be understood that thereare as many )airsof rindin" wheels there are saws.

b C) The pairs of grinding wheels 22 are held in spaced relation hyhmeans of spacing washers or collars 23. If so desired a cylinder of abrasive material 22 having a plurality of grooves 23 for receiving saws may. be substituted for the grinding wheels. One end of the shaft 'isexten'ded beyond the frame and has securedthereto a drive pulley 2d and an idle pulley 25, which are adapted to be engaged by a driving belt 26, which is 'of the frame, so as to bring the s? adapted to engage either alive pulley 27 or an'idle pulley 27 mounted on the drive shaft 28, which is journaled in bearings 29 secured to the rearbeams 6,8 and 10. The

'drive shaft 28 is adapted to be driven from any suitable power source by means of a belt 30, which istrained around 'a drive pulley 31 and adapted to be shifted to an idle pulley 32 secured to the shaft. 7

Pairs of spaced arms 33 are secured to the front face of the beams 5 and 7 a'ndform' brackets and supporting the bearings and a saw mandrel A plurality of cir-' cular saws 36 are secured to the mandrel 35 I and are held in spaced relation" to each other by means of spacing collars 37. The

saw mandrel is'positijoned directly in front of the grinding"mechanism and the bean ings 34 are arranged to be shifted laterally vs mto engagement with the grinding wheel.

' Each of the that is slidably mounted in a slidingplate 4O whichhas a pair of upstanding arms ll which receive the depending portion. reduced portion 39 provided with 'a d'e pending lug 42 which is loosely received between the armsll, so thatthe same can readily slide in between the arms. f The plate .40 has depending lug 43, which is slidably received between the arms 33.1 The arms 33 have their forward faces/inclined downwardly and. the upper ends" of the same are connected liy'a'front wallfila and the rear faces of the arms are connected by 'a rear Wall elfi'which forms means for secur ing the arms to the standards and 7. 1 Shaft 46 extends in betweenthe spaced arms and are rotatably carried by the front walls 44-. and are held against longitudinal and lateral movement by means of collars 4L7 which engagethe front and rearifaces of the'front wall. The shafts lG are provided .witlroperating handles 48 and the bodies of the shafts are provided with threads 49 which extend through a ,thi'eaded bore fiO formed in each 'of-thedepending lugs 43 The inner end of each shaft 46 is provided with a beveled :gear 51 which meshes with a beveled gear 52 carried by each terminal of the longitudinally "extending shaft 53 which ISYOtZitHblY carried by the inner arms 33' andiextends from the farms carried by one carrying the bearings 34L therewith. bearings 34 are provided wlth a detachable upper section 57 which provides means bearings 3st includes a lower block 38,:wh1ch has a reduced portion 39 The grooves 68 formed in the bearings.

standard to the arms carried by the other standard. Thus it will be seen that when 1 one of the shafts ee ie rotated by means of the handles d8, the other will be rotated therewith and thef'bearing 38 through the .medium of the depending lugs 43 traveling on the threaded portions 49 of the shafts 46 will be broughtinto and out of engagement with the saws according to the'direction of whereby the saw mandrel 35 can be readily removed from the bearings.

:The'gummer mechanism 4 includes swingingframe 58, which ismounted'between the standards 5 and 7 and'is swingably mounted on a shaft 59, which extends longitudinally of theframe 'and is rotatably mounted in a pair of bearings (30.; whichare carried by the upper ends of the standards 5 and 7.

The frame 58 is provided with a plurality of upstanding. bearings 61 which rotatably receive theshaft 59. A plurality of spaced beveled. gears 62 are keyed to the shaft 59 and mesh with the beveled gears 63 keyed to the upper ends of the shafts 64 which carry the guinmers (35. The shafts G l-extend V81: tically through the swinging frame 58 and are mountedin suitable bearings SGavhich are held in place by set screws 67 which extend'intothe frame 58 and fit into annular frame 58 isxmounted for swinging inovenientp sov that thelgummers '65. may be brought into and out of engagement with the teeth of the saws, as the saw mandrel is rote-fed by means which will hereinafter more fully appear. The frame is actuated by arms which are pivotally COHHQCfG-Clifi at 7 to the lower endof the frame and the'rear ends of the arms are provided with:

The

circular straps 71 which surround cams or eccentrics 72 that are keyed to a shaft 73; which extends longitudinally of the frame and rotatably mounted insuitable bearings T l and is positienedabove the drive siaft The'shaft 73 connectedtothe amass by means of asprocket' chainF5- which is trained aroiuid'the sprocket whee s 76 which 'are keyed to the"shaftsi73 and Thus it'will be seen upon rotation of hal ishatft '28 the'fra'me will be swung back and ferth through the medium of the Faflffilh the arms we the shaft The saws are rotated step by step so that as the frame 58 is swung backtand forth, thegummers will engage a different/tooth of the saws. V This is accomplished by means of a ratchet wheelq77, which is detachably held inposition on the inner end ofthe mandrel by means-of a nutthat is turned on a threaded end 79 of the mandrel. Theratchet wheel 77 is engaged by a dog 80, which is secured as at 81 to an arm-82,which carriesa circular strap 83', which is positioned around the eccentric cam 8 1, is keyed to'the shaft '73, g

It will be seen that the eccentrics 84 and,

72 are rotated by theshaft T3 and when the dog 80 advances the sawsone tooth, -,the

frame 58 will be swung on the bearings 61 and the-gummers 65 will be brought into engagement with a different tooth offthe saws:-

A longitudinally extending strip 85 is 7 carried by the longitudinally extending beam 19 ,iand carries a plurality of pairs-of spaced arms 786,;which have the upper ends thereof curved arcuatelyas at 87 and are positioned directly invfront of the pairs of grinder wheels, 22. The outer edgesof the, pairs of arms 86 arebeveled-inwardly as at V V SSand the same form-means for guiding the saws ,into; engagement -with' the grinder:

wheels.

The shaft-59- has one end extended beyond the frame and keyed thereto is a pulley 89, which is operatively connected to'a pulley 90 keyed to the drive shaft 28 by means of a belt 91'; Thusit will be seen that the gummers arerotated, as the same are broughtyinto and out of engagement wlth the saws.

against apin :96 carried-by thejrod. This spring normally tends to slide'the rod 92 outwardly and shiftthebelt 26 tothegidlet. pulley. The inner end of the rod is pro vided ,with a hook 97, which engages the hook end .98--of a sliding rod 99, which is mounted in suitable-guides and carried by the beam 14. The rod 19 is pivotally: connected by means of a pin-100, toa pivoted .7

operatinglever 101 which is provided with a slot 102for receiving the pin.. The lever is-pivotedintermediate its ends by means of apivot. pin 103tOth6J'91latlV6ly. short beam 16' and the outerrend of the 1 same is arranged to engage the shoulder l0 lzformed, on the armrl05, Thus it will 'be seen that h i-s n t rfi is le n th t nreiratchet wheel. 77'.

sion-of vthe coil spring 95 by means of the,

arm 105n Anexpansion spring 106 is coiled 7 rod 99, and the pivoted lever 101 and the] around the rod 99 and is confined between theoperating lever. 101 and the beam 14, and ,1

the rod99 is helda-gainst movement under the influence of the spring 106 by means of the operating lever 101' engaging the shoulder 104:. A sliding rod 107 is mounted in 7 guides 1 08 and 109 carried, respectively by the lower surface of the beam 16 and one offi the beams :15. i The inner end of the rod abuts-theinner end of the sliding rod 92 adjacent to the hook end thereof andthe outer end oftherod is positioned in the path of an arm 110 having the anti-friction roller 11]. mounted thereon. lVhen the saws have madena complete revolution the arm 110 will come incontact with the outer end'of the. sliding rod 107 and push the same rear-1 wardly, which in turnwill engage the inner.

end of the rod 92 and force the hooked end thereof out of engagement with the hooked end98 ofthedrod 99 and allow the sliding] rod 192 under the tension of theeoil spring 26 tothe-idle pulley; 27; and-thus prevent further rotation of the grinders ..22w Thea standardsfi and 8 are provided with grooves 112 soas to allow the rod 92 toslide laterally when therodl07 engages the same) An. arm

.90 to slide outwardly-andthus shift the beltf 113 iscarriedby the opposite face of the ratchetwheelfli and is arrangedto engage,

the outer end of the pivoted lever. 101. which a will lift .the lever out of engagement with.

the shoulder 10 1 o'fvthe, arm andthus allow the lever. tov swingon the pivot 103 I under-theinfluence of the coil, spring "106 and-shift the vdrive belt 30 toltheidle, pulley 32., Theinner end. of thelever. 101 is vprovidedv with, upstanding arms 114 which ;.en{. gage-the drive be1t'30 so that the same will be shifted uponmovement of the lever.

Ingoperation .ofithe improveddevice the sawvmandrel. 35 carrying the desired 1mm;

her of. sawsis positionedin the bearings, 34

andztheisame. are then adjusted laterally, of I the machine as described above, to. bring the saws. into engagement. With the grinding wheels 22,. The machine ,is then star-ted and the grinding. wheels,. are, rotated which grind .both sides, of the saws, andthe gumj-W mers" 65 will ,berbroughtinto. engagement with eachtooth of the sawsby means ofjthe I Whenthe saws have, made a (complete revolution the grinders willbe thrown outof operation through the I medium of "the belt shifting mechanism f 107 ;an(1v,When the teeth of. the saws then being engaged by the grinding wheels' are brought into. engagement, with the :gummers by meansof the ratchet wheel, the arm 113 willo enga-ge the lever; 101 and detach the same from the shoulder 104; and the lever;

will shift the drive belt out to the idle pulley and thus stop rotation .of the gum- 7 more.

In practice,v I have found that theform of my invention illustrated in the accom panyingdrawings and referred to in the above description, as the preferred embodiments, is the most eilicient and practical;

, yet realizing the conditions concurrentyvith the adoption of my device "Will necessarily vary, I desire to emphaslze the fact that various minor changesyin details of 0011-. .struction, proportlon and arrangement of parts may be resorted to Within the Scope of V the intended] claims, whenrequired, without sacrificing'any oftheadvantages of my in vention as' set forth. I WVhat I claim as new 1s 1. In a gumming and grinding machme,

a saw mandrel support, a mandrel mounted in the support, a plurality of saws carried by'the mandrelfgrindmg means positioned.

in the rear of the mandrel, g'umming means positioned above the mandrels, means for operating the grinding and gumming means, and means for moving the mandrel support,

so as to bring, the saws into and out of engagement With the grmdlng and gummmg means.

2. In a grinding and gumming machine, "a frame, grinding means rotatably carrie'd' by the frame, brackets carried by the frame and arranged in front of the grinding means, bearings slidably mounted inthe brackets, a saw mandrel carried :by the bearings, a

bring the saws into and out of'engagement wlth the grinding and gummmg mechamsm.

In a gumming and grinding machine,

a frame, a rotary shaft carried bythe frame, grinding means mounted on the shaft, bearings adjustably carried by the frame, a saw mandrel mounted in the bearings, a plurality of saws mounted on the mandrel, means for adjusting the bearings for bringing the sawsout of engagement with the grinding means, and a plurality of rotary operating gummers carried by the frame;

4, A gummingand grinding machine in eluding a frame, a shaft carried by the frame, a plurality of grinding Wheels ,mounted on the shaft, aplurality of oscillatringfland rotary gummers'mounted on the frame and positionedabovethe shaft, brackr55 et's vcarried by the frame, laterally adjustable bearings carried by the brackets, a saw mandrel carried by the bearings, as and for the purpose specified; I p I g In a'grmd ng and gumming machme,

a frame, a shaft carried by the frame, a

p ur y, Qf g ding Wheels keyed to-"the shaft, a plurality of rotary and oscillating gummerscarried by the frame and positioned, above the grmdmg means, ad ustable bearings earned by the'frame', a saw plurality of saws carried by the mandrel, andfmeans for operatlng 'the'bearlngs, to

I mandrelcarrmd by the bearings, a, plurality of saws mounted on the mandrel, a drive shaft, means operatlvely connectmg the drive shaft to the first-mentioned shaft,"

means operativel'y connecting the gummers tothe'drive shaft, and means for automati oally stopping the operation'ofthe grinders and gummers upon one revolution of the saw mandrel.

'6. 'gumming and grinding'machine includlng a frame, a shaft rotatably carried by the frame, a plurality ofgrinding Wheels keyed to the shaft, bearings carried by the frame,';means for" adjusting the bearings laterally and longitudinally of the frame, a saw-mandrel carriedby the bearings, a plurality of saws keyed t0 the mandrel,

means'for rotating the mandrel step by step,

" support, 'amandrel mounted in the support,

a swin in frame means for swin 'in 'the frame, apluraIity'ofveItiOal shafts carried by'the frame, gummers keyed to the shaft, and means for rotating the shaft. 7

8. In a gumming and grinding machine, 7

a frame, an'adjustablemandrel support,a mandrel carried by the support, a plurality of savvs keyed to the mandrel, a swinging frame 'carried'by the first-mentioned frame, a drive shaftcarried by the first-mentioned frame, a driven shaft carried by the firstmentioned frame, grinding Wheels carried bythe driven shaft, means operatlvely connecting the drive and driven shafts, a plurality of vertical 7 shaftscarried by the swinging frame, gummers mounted upon the vertical shafts, a shaft carried by the swinging frame, means operatively connecting the last-mentioned shaft to the vertical shafts, means operatively connecting the driving shaft Withthe shaft carried by theswinging "frame, a plurality of eccentrics carried by the driven shaft, and means operatively connecting the eccentrics with the swinging frame, as and for the purpose specified.

9'. In a gumming' machine, a frame, an adjustable mandrel support earned by the frame, a mandrel mounted in'thesupport, a

plurality of saws carried by the mandrel, a

ratchetwheel detachably secured to the mandrel, a swinging block carried by the frame, a plurality, of vertical shafts carrled'by the frame, a plurality of gummers keyed to the shafts, alongitudinally extending shaft carried by the block, means operatively con-' necting the vertical shaft With the longltudinally extending shafts, a driving shaft, a driven shaft, means operatlvely connectmg the driving shaft with the driven shaft, a plurality of cams carried by the driven shaft, means operatively connecting certain of the cams with the swinging frame, an arm operated by one of the cams, a dog carried by the arm for engaging the ratchet wheel, as and for the purpose specified.

10. A grinding and gumming machine, a frame, anadjustable saw mandrel support carried by the frame, a mandrel mounted in the support, a plurality of saws secured to the mandrel, a ratchet wheel dctachably secured to the mandrel, a grinding shaft rotatably carried by the frame, a plurality of grinding wheels secured to the shaft, a swinging block carried by the frame, a plurality of vertical shafts rotatably carried by the block, a longitudinally extending shaft carried by the block, means operatively connecting the vertical and longitudinal shafts, gummers keyed to the shafts, a driving shaft, a driven shaft, means operatively connecting the driving shaft with the driven shaft, means operatively connecting the driving shaft with the longitudinal extending shaft, means operatively connecting the grinding shaft with the driven shaft, means operatively connecting the driven shaft with the block, means operatively connecting the driven shaft with the ratchet wheel, as and for the purpose specified.

11. A grinding and gumming machine, a frame, an adjustable saw mandrel support carried by the frame, a mandrel mounted in the support, a plurality of saws secured to the mandrel, a ratchet wheel detachably secured to the mandrel, a grinding shaft, a

plurality of grindirwheels keyed to the shaft, a drive pulley and an idle pulley carcoil spring normally tending to shift the rod, a sliding rod, the meeting ends of the rods having hooked ends, an arm carried by the ratchet wheel and arranged to engage the sliding rod to move the first-mentioned shift rod to disengage the same from the hooked end of the second-named rod, a pivoted lever operatively connected to the second-mentioned rod, an arm, a shoulder formed on the arm arranged to engage the pivoted lever, an expansion coil spring engaging the lever and normally tending to swing the same on its pivot, a second arm carried by the ratchet wheel and arrangedv to engage the pivoted lever to lift the same out of engagement with the shoulder, a belt shift carried by the inner endof the lever, a belt trained around the pulleys carried by the drive shaft, and the last-mentioned belt shift en aging the second-mentioned belt, as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE PIERCE NABORS. Witnesses:

H. D. PERKINS, FRED WOODALL. 

